// Reset


//在HTML标签在浏览器里有默认的样式，例如 p 标签有上下边距，strong标签有字体加粗样式，em标签有字体倾斜样式。不同浏览器的默认样式之间也会有差别，例如ul默认带有缩进的样式，在IE下，它的缩进是通过margin实现的，而Firefox下，它的缩进是由padding实现的。在切换页面的时候，浏览器的默认样式往往会给我们带来麻烦，影响开发效率。所以解决的方法就是一开始就将浏览器的默认样式全部去掉，更准确说就是通过重新定义标签样式。“覆盖”浏览器的CSS默认属性。最最简单的说法就是把浏览器提供的默认样式覆盖掉！这就是CSS reset。

// global-reset()
// nested-reset()
// reset-font()
// reset-box-model()
// reset-body()
// reset-table()
// reset-table-cell()
// reset-html5()

// http://meyerweb.com/eric/thoughts/2007/05/01/reset-reloaded/
// http://yuilibrary.com/yui/docs/cssreset/
// http://yui.yahooapis.com/3.18.1/build/cssreset/cssreset-min.css
// http://cssreset.com/

global-reset()
    html, body, div, span, applet, object, iframe,
    h1, h2, h3, h4, h5, h6, p, blockquote, pre,
    a, abbr, acronym, address, big, cite, code,
    del, dfn, em, img, ins, kbd, q, s, samp,
    small, strike, strong, sub, sup, tt, var,
    dl, dt, dd, ol, ul, li,
    fieldset, form, label, legend,
    table, caption, tbody, tfoot, thead, tr, th, td
        reset-box-model()
        reset-font()
    body
        reset-body()
    ol, ul
        list-style: none
    table
        reset-table()
    caption, th, td
        reset-table-cell()
    a 
        text-decoration:inherit
        &:hover
            text-decoration:underline
    a img
        border: none
    * 
        box-sizing: border-box; 

nested-reset()
    div, span, object, iframe, h1, h2, h3, h4, h5, h6, p,
    pre, a, abbr, acronym, address, code, del, dfn, em, img,
    dl, dt, dd, ol, ul, li, fieldset, form, label,
    legend, caption, tbody, tfoot, thead, tr
        reset-box-model()
        reset-font()
    table
        reset-table()
    caption, th, td
        reset-table-cell()
    a img
        border: none

reset-box-model()
    margin: 0
    padding: 0
    border: 0
    outline: 0

reset-font()
    font-weight: inherit
    font-style: inherit
    font-family: inherit
    font-size: 100%
    vertical-align: baseline

reset-body()
    line-height: 1
    color: black
    background: white

reset-table()
    border-collapse: separate
    border-spacing: 0
    vertical-align: middle

reset-table-cell()
    text-align: left
    font-weight: normal
    vertical-align: middle

reset-html5()
    article, aside, canvas, details, figcaption,
    figure, footer, header, hgroup, menu, nav,
    section, summary, main
        reset-box-model()
        display: block
    audio, canvas, video
        display inline-block
        *display inline
        *zoom 1
    audio:not([controls]),[hidden]
        display none